[!desperate!] Countdown day display: why?:... /60/60/24<-modulo->365-0.5:rounded to 0

In countdown I don’t understand why we have to set like that. (question)
there are two data to work on, current time and ‘date/time picker’ value time.

text data source for displaying date:
set time - current time; formatted as seconds /60/60/24<-modulo->365-0.5:rounded to 0.

  1. Can you explain the .../60/60/24<->modulo365-0.5;rounded to 0?
  2. what is ;rounded to?


This might be useful for context:

My question is from that video lol

thanks anyway!